S-91390A688 M20 x 40 mm DIN 916, ISO 4029 Set Screws
Set Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional holding power with extra fine thread spacing for secure, vibration-resistant fastening in demanding applications.
- Superior material strength and durability provided by alloy steel with a Rockwell C45 hardness, ensuring long-term reliability.
- Precise and reliable thread engagement due to the Class 5g6g thread fit, minimizing the risk of cross-threading and ensuring consistent performance.
- Easy and secure installation with a 10 mm hex drive, allowing for high torque application in confined, headless designs.
- Effective component gripping from the cup tip design, which bites into surfaces to prevent slippage and movement.
- Global compliance and interoperability by meeting DIN 916/ISO 4029 standards, ensuring quality and fit in international projects.
- Environmentally responsible manufacturing with full compliance to RoHS 3 and REACH regulations, safe for various industrial uses.
Professional Applications & Engineering Value
This M20 set screw is engineered to solve critical challenges in industrial applications where space is limited and vibration resistance is paramount. The alloy steel construction and Rockwell C45 hardness provide exceptional shear strength and wear resistance, preventing failure under dynamic loads. Its headless design and hex drive enable installation in tight assemblies, while the extra fine metric thread and Class 5g6g thread fit offer superior clamping force and precision alignment. The cup tip ensures a firm grip on shafts and components, making it ideal for securing gears, pulleys, and collars in machinery, automotive, and precision equipment, reducing maintenance needs and enhancing operational safety.
Specification Summary & Compliance
This set screw features an M20x1.5 mm extra fine thread with a Class 5g6g thread fit per ISO metric standards, ensuring high dimensional accuracy. It is manufactured in compliance with DIN 916 and ISO 4029 specifications, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements for environmental and health safety.
